Floral teenage girl's body divided into two worlds of black and white, giant face is frightening

Gigantic face, gigantic tongue, gigantic ears, gigantic lips; not only that, but her body was actually split along the midline into two completely different halves - one black, and one white. All of these unimaginable and horrifying symptoms were concentrated on Xiao Yan, a 16-year-old girl in the bloom of her youth. So, what force twisted the features of this girl, known as the "monster with the giant face"? And for 16 years, how did she endure living with such an unsightly face?